Final answer:
The client who is postoperative following a thyroidectomy should include milk in her diet as it contains the greatest amount of calcium, which is crucial for bone health after the removal of the parathyroid glands.
Step-by-step explanation:
The client who has undergone a thyroidectomy and had their parathyroid glands removed should focus on including foods high in calcium in their diet, as the parathyroid glands play a crucial role in calcium homeostasis. Considering the foods listed, milk contains the greatest amount of calcium per serving. It is recommended to consume dairy products like milk and cheese, which are significant dietary sources of calcium. Other good sources of calcium include green leafy vegetables, broccoli, fortified orange juice, and fish with soft bones like sardines. Ensuring adequate calcium intake is essential for bone health, especially in the context of a condition like hypocalcemia that can occur postoperatively when the parathyroid glands are removed.